Cylinder Heads
Competition cylinder heads are fitted with bronze guides,hi lift double valve springs and hi flow light weight 3 angle valves on 3 angle valve seats. The ports are fully gas flowed and polished. ( On Race heads will allow .520 valve lift before coil binding.)
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GT6/1 1275 Stage 4 Head
35.6 mm x 29 mm. Lead free. 1.4" fully modified inlet ports with raised inlet tract for maximum air flow.fully throated exhuasts. This cylinder head is our favourite for mild competition or fast road. Available 9 or 11 stud. Please specify when ordering.GT6/1 1275 Stage 4 Head
GT6/1
35.6 mm x 29 mm. Lead free. 1.4" fully modified inlet ports with raised inlet tract for maximum air flow.fully throated exhuasts. This cylinder head is our favourite for mild competition or fast road. Available 9 or 11 stud. Please specify when ordering. -
GT2 Stage 4 1100 Head Lead Free
31mm x 26mm Lead free. fully modified inlet ports within the constraints of the push rod tubes raised inlet tract for maximum air flow.fully throated exhausts. Customers Own unit to be modified either 12g202 or 12g295 Makes a great comp headGT2 Stage 4 1100 Head Lead Free
GT2
Pre A+ Head For the 1100's. 31mm inlet/26mm exhaust. Fully Ported and Polished.31mm x 26mm Lead free. fully modified inlet ports within the constraints of the push rod tubes raised inlet tract for maximum air flow.fully throated exhausts.
Customers Own unit to be modified either 12g202 or 12g295 Makes a great comp head -
GT3 Stage 4 998 Head Lead Free
31mm x 26mm. Lead free Fully modified inlet ports within the costraints of the push rod tubes raised inlet tract for maximum air flow.fully throated exhuasts. Either 23cc for use with flat top pistons or 21.5cc for use with dished pistons Please state wheGT3 Stage 4 998 Head Lead Free
GT3
A+ Head For the 998's. 31mm inlet/26mm exhaust. Fully Ported and Polished.
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GT4 Cooper/1100 Big Valve Lead Free
33mm x 26mm Lead free Fully modified inlet ports with raised inlet track for maximum air flow,fully throated exhuasts. Either 26cc for use with D top pistons or 22.5cc for use with flat top pistons Please state when ordering. Race option is available.GT4 Cooper/1100 Big Valve Lead Free
GT4
Head For Mini Cooper/1100 12G295 or 12G202 Casting.Race option is available for this Head using 29mm exhaust valves. The block will need pocketing to allow the 29mm valve. Race option price add £165.00 Call our Sales for further information.
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GT6 Stage 4 head For Mpi Mini's
35.6mm x 29 mm. Lead free 1.4" inlet ports with raised inlet tract for maximum air flow but with locating rings partially retained for air seal, Fully throated exhausts. 9 stud only. Use standard exhaust gasket.Ultimate MPi head.GT6 Stage 4 head For Mpi Mini's
GT6/MPi
35.6 mm x 29 mm. Lead free. 1.4" fully modified inlet ports with raised inlet tract for maximum air flow.fully throated exhuasts. This cylinder head is our favourite for mild competition or fast road. Available 9 . Please specify when ordering.Mpi Engines from 1275 to 1380cc. ( For optimum power we recommend our fully modified Inlet manifold together with the larger 48/52mm Throttle Body )
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GT7 Competition/Race/Rally Track day Head
35.6 mm inlet x 31mm exhaust.Ideal long distance race/rally or the ultimate in road heads.1.5" inlet ports fully throated exhaust ports.Close to Miglia spec. Available 9 or 11 stud fitment..Needs large port manifold gasket.GT7 Competition/Race/Rally Track day Head
GT7/1
Suitable for all A+ Engines from 1275 to 1380cc. 35.6mm inlet/31mm exhaust. 9 or 11 stud
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GT14 Race Head Lead Free
37 mm x 29 mm fantastic race head.1.5" fully throated inlet and exhaust ports.Close to Downton works spec. Available 9 or 11 stud fitment. NB- Availability of parts could result in change of specification once undertakenGT14 Race Head Lead Free
GT14
Suitable for all A+ Engines from 1275 to 1380cc. 37mm inlet/29mm exhaust. 9 stud
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GT15 Race Head
37 mm x 31mm offset exhaust valve for increased flow, Outright Race head 1.5" inlet ports fully throated with raised inlet roof for maximum air flow Optimised exhaust ports.Available 9 or 11 stud fitment. Use large port manifold gasket NB- Availability of parts could result in change of specification once undertakenGT15 Race Head
GT15
Suitable for all A+ Engines from 1275 to 1380cc. 11 stud.
37 mm x 31mm offset exhaust valve for increased flow, Outright Race head 1.5" inlet ports fully throated with raised inlet roof for maximum air flow Optimised exhaust ports.Available 9 or 11 stud fitment. Use large port manifold gasket
NB- Availability of parts could result in change of specification once undertaken
Please state cc when ordering range from 16 cc to 24.5cc
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GT17 Race Head
37 mm x 31mm offset valve for increased flow, Outright Race head 1.5" inlet ports maximised fully throated with raised inlet tract for maximum air flow Optimised exhaust ports.spec. NB- Availability of parts could result in change of specification once undertakenGT17 Race Head
GT17
Suitable for all A+ Engines from 1275 to 1380cc. 11 stud.
37 mm x 31mm offset valve for increased flow, Outright Race head 1.5" inlet ports maximised fully throated with raised inlet tract for maximum air flow Optimised exhaust ports.spec.
NB- Availability of parts could result in change of specification once undertaken
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GT18 Race Head
37.2mm x 31mm offset exhaust valve for increased flow, Outright Race head 1.5" inlet ports maximised fully throated with raised inlet tract for maximum air flow Optimised exhaust ports.spec. and flo bench tested assured for maximum air flow. NB- Availability of parts could result in change of specification once undertakenGT18 Race Head
GT18
Suitable for all A+ Engines from 1275 to 1380cc. 11 stud.
37.2mm x 31mm offset exhaust valve for increased flow, Outright Race head 1.5" inlet ports maximised fully throated with raised inlet tract for maximum air flow Optimised exhaust ports.spec. and flo bench tested assured for maximum air flow.
NB- Availability of parts could result in change of specification once undertaken
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Phase 2 Turbo Head
Modified Chambers 35.7 mm x 29.3 mm, 23- 28cc but retaining Standard unmodified inlet and exhaust ports, Converted to Lead Free Fitted with 1 piece stainless 35.7 mm inlet valves 29.3 mm exhaust. Bronze guides and double 220 lb valve springsPhase 2 Turbo Head
ABR002
Avonbar phase 2 head is Chamber modified only with a Chamber size from 23.5 to 26.5 depending on customers requirement. The spec is bigger inlet up from 33mm to 35.7mm inlet & 29.3 mm exhaust valves, 9 or 11 stud, 220lb double valve springs, bronze valve guides, 3 angle valve seats, Converted fully to Unleaded.